Furnace.



PATENTED UGT. 22, 1907.

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FURNAGE.

APPLICATION HLED mm1, 1907.

focesex ...VZW Jrg/03m? UNITED STATES PATENT oEEroE.

EDGAR li. PRTCE, Ol" NIAGARA FALLS, NEW YORK.

FURNACE Application filed February l, 1907. Serial No. 355.338.

To all whom it may concern: l

Be it known that I, EDGAR F. PRICE, a citizen of the United States, residing at Niagara Falls, in the county of Niagara and State of Nev;r York, have invented certain new and useful Improvements in Furnaces, of which the following is a specification.

This invention is an improved means for supplyingv air and gaseous fuel to furnaces, especially therotary drums employed for calcining ores and rock, so as to produce uniform or regulated combustion therein.

Referring to the accompanying drawings-Figure l is a side elevation, partly in section, of a portion of a rotary calcining drum, a gas-producer, andthe improved means for supplying gas and air to ,the drum; Fig. 2 is a transverse vertical section on the line 2-2 of Fig. 1. l f' The heating chamber, shown in Fig. l as a rotary cylinder, is open at one end and receives the concentric gas and air fines 2, 3. The flue 2 is shown as :receiving gas from a producer 4, but it may be supplied with gas from any source, or with oil or a blast of pulverized iuel. The annular air flue 3 is subdivided by longitudinal partitions 5. Around the outer end oi the iiue 3 is a bustle-pipe 6, receiving air from a blast-main 7. Supply ports 8 having control-valves or gates 9 open radially inward from the bustlefpipe into the air flue 3, at

points circumferentially between the partitions 5. By adjusting these valves, the amount of air supplied to different portions of the drum may be regulated so as to produce uniform combustion therein, or, if desired, to increase the combustion andheat at. any desired point.

Specification of Letters Patent.

Patented Oct. 22, 1907.

l claim:`

1. A furnace, comprising a heating chamber, concentric fuel and air flues opening into said chamber, and independently-valved supply ports'opening into the outer iiue atditfereut points crcumferentially.

2. A furnace, comprising a heating'cllamber, concentric fuel and air iiues opening into said chamber, longitudinal partitions in the outer flue, and independeutly-valved supply ports severally opening into the outer flue at points circumferentially between the partitions.

3. A furnace, comprising a revoluhle cylindrical heating chamber, concentric fuel and air flues opening into said chanilu'er.y and independently-valved supply ports opening into the outer fiue'at different points circumferentially.

4. A furnace, comprising a revoluble cylindrical heating chamber, concentric fuel and air fines openingfinto' said-` chamber, longitudinal partitions in the outer''11amfand4 -A valved supply ports severally opening into the outer flue at points clrcumfereutially between the partitions.

5. A furnace, comprising a heating chamber, a gas producer, a gas flue connecting said producer and chamber, nir nues arranged around said gas ue, and means for separately controlling each air flue.

6. A furnace, comprising a revoluble cylindrical heating,r chamber, a gus producer, a gas iiue connectingsaid producer and chamber, air ues arranged around said gas flue, andineans for separately controlling each air ue.

In testimony whereof, I athx my signature in presence of. two witnesses.

EDGAR F. PRICE.

Witnesses:

.T. S. JACKSON,

B. OSHEA. 

